#pragma once
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<string>
#include<cassert>
#include<unistd.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<fcntl.h>
typedef struct sockaddr sockaddr;
typedef struct sockaddr_in sockaddr_in;

#define CHECK_RET(exp) if(!(exp)){\
    return false;\
}

class TCPSocket
{
public:
    TCPSocket()
        :fd_(-1)
    {}
    TCPSocket(int fd)
        :fd_(fd)
    {}

    bool Socket()
    {
        fd_ = socket(AF_INET,SOCK_STREAM,0);
        if(fd_ < 0)
        {
            perror("socket");
            return false;
        }
    }

    bool Close() const
    {
        close(fd_);
        printf("close fd = %d\n",fd_);
        return true;
    }

    bool Bind(const std::string& ip,uint16_t port) const
    {
        sockaddr_in addr;
        addr.sin_family = AF_INET;
        addr.sin_addr.s_addr = inet_addr(ip.c_str());
        addr.sin_port = htons(port);
        int ret = bind(fd_,(sockaddr*)&addr,sizeof(addr));
        if(ret < 0)
        {
            perror("bind");
            return false;
        }
        return true;
    }

    bool Listen(int num) const
    {
        int ret = listen(fd_,num);
        if(ret < 0)
        {
            perror("listen");
            return false;
        }
        return true;
    }

    bool Accept(TCPSocket* peer,std::string* ip = NULL,uint16_t* port = NULL)const 
    {
        sockaddr_in peer_addr;
        socklen_t len = sizeof(peer_addr);
        int new_sock = accept(fd_,(sockaddr*)& peer_addr,&len);
        if(new_sock < 0)
        {
            perror("accept");
            return false;
        }
        
        printf("accept fd = &%d\n",new_sock);
        peer->fd_ = new_sock;
        if(ip != NULL)
        {
            *ip = inet_ntoa(peer_addr.sin_addr);
        }
        if(port != NULL)
        {
            *port = ntohs(peer_addr.sin_port);
        }
        return true;
    }

    bool Recv(std::string* buf)const
    {
        buf->clear();
        char tmp[1024*10] = {0};
        ssize_t read_size = recv(fd_,tmp,sizeof(tmp),0);
        if(read_size < 0)
        {
            perror("recv");
            return false;
        }
        if(read_size == 0)
        {
            return false;
        }
        buf->assign(tmp,read_size);
        return true;
    }

    bool Send(const std::string& buf) const
    {   
        ssize_t write_size = send(fd_,buf.data(),buf.size(),0);
        if(write_size < 0)
        {
            perror("send");
            return false;
        }
        return true;
    }

    bool Connect(const std::string& ip,uint16_t port) const
    {
        sockaddr_in addr;
        addr.sin_family = AF_INET;
        addr.sin_addr.s_addr = inet_addr(ip.c_str());
        addr.sin_port = htons(port);
        int ret = connect(fd_,(sockaddr*)&addr,sizeof(addr));
        if(ret < 0)
        {
            perror("connect");
            return false;
        }
        return true;    
    }

    int GetFd() const
    {
        return fd_;
    }
private:
    int fd_;
};